In the frame of a quasi-viscous mechanism of plastic deformation via the flows of nonequilibrium point defects in the fields of local pressure gradients, peculiarities of propagation of the front of nanobands of crystal lattice reorientation are studied. A theoretical analysis of the velocities of point defects and the carriers of the rotational deformation mode – nanodipoles of partial disclinations, is made in terms of the type of point defects (vacancies and interstitial atoms), deformation temperature, disclination structure peculiarities and elastically stressed state at the nanoband propagation front. A possibility of simultaneous occurrence of the martensitic and quasi-viscous deformation modes at this front is shown. The effective viscosity coefficient is estimated for different energies of migration activation and temperatures. An important role of high local moments or stress field gradients is revealed during activation of the rotational deformation mode. It is shown that under the conditions of high local stress fields the material viscosity can reach the values close to that of liquid glass.
Similar content being viewed by others
References
A. N. Tyumentsev and I. A. Ditenberg, Russ. Phys. J., 54, No. 9, 977 (2012).
A. N. Tyumentsev, I. A. Ditenberg, A. D. Korotaev, et al., Phys. Mesomech., 16, No. 4, 319 (2013).
A. N. Tyumentsev and I. A. Ditenberg, I. I. Sukhanov, et al., Russ. Phys. J., 62, No. 6, 962 (2019).
V. I. Vladimirov and A. E. Romanov, Disclinations in Crystals [in Russian], Nauka, Leningrad (1986).
M. J. Zehetbauer, G. Steiner, E. Schafler, et al., Mater. Sci. Forum, 503, 57 (2006).
V. A. Starenchenko, D. N. Cherepanov, Yu. V. Solovieva, et al., Russ. Phys. J., 52, No. 4, 398 (2009).
V. A. Starenchenko, D. N. Cherepanov, and O. V. Selivanikova, Russ. Phys. J., 58, No. 4, 446 (2015).
A. N. Tyumentsev, A. D. Korotaev, I. A. Ditenberg, et al., Common Aspects of Plastic Deformation in High-Strength and Nanocrystalline Metallic Materials [in Russian], SB RAS Publ., Novosibirsk (2018).
E. B. Shand, Mod. Mat., 6, 247 (1968).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 6, pp. 125–130, June, 2021.
Rights and permissions
About this article
Cite this article
Sukhanov, I.I., Tyumentsev, A.N. A Study of Common Factors of Plastic Deformation Via a Flow of Point Defects in the Fields of High Local Pressure Gradients in Metallic Materials. Russ Phys J 64, 1100–1106 (2021). https://doi.org/10.1007/s11182-021-02430-2
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11182-021-02430-2